page_title: Leadville, Colorado
section_title: Leadville's colorful past
hierarchical_section_title: Leadville, Colorado / History / Leadville's colorful past
caption_attribution_description: Gold from Colorado, USA. (public display, Leadville Mining Museum, Leadville, Colorado, USA) A mineral is a naturally-occurring, solid, inorganic, crystalline substrance having a fairly definite chemical composition and having fairly definite physical properties. At its simplest, a mineral is a naturally-occurring solid chemical. Currently, there are over 4900 named and described minerals - about 200 of them are common and about 20 of them are very common. Mineral classification is based on anion chemistry. Major categories of minerals are: elements, sulfides, oxides, halides, carbonates, sulfates, phosphates, and silicates. Elements are fundamental substances of matter - matter that is composed of the same types of atoms. At present, 118 elements are known (four of them are still unnamed). Of these, 98 occur naturally on Earth (hydrogen to californium). Most of these occur in rocks &amp; minerals, although some occur in very small, trace amounts. Only some elements occur in their native elemental state as minerals. To find a native element in nature, it must be relatively non-reactive and there must be some concentration process. Metallic, semimetallic (metalloid), and nonmetallic elements are known in their native state as minerals. Gold (Au) is the most prestigious metal known, but it's not the most valuable. Gold is the only metal that has a deep, rich, metallic yellow color. Almost all other metals are silvery-colored. Gold is very rare in crustal rocks - it averages about 5 ppb (parts per billion). Where gold has been concentrated, it occurs as wires, dendritic crystals, twisted sheets, octahedral crystals, and variably-shaped nuggets. It most commonly occurs in hydrothermal quartz veins, disseminated in some contact- &amp; hydrothermal-metamorphic rocks, and in placer deposits. Placers are concentrations of heavy minerals in stream gravels or in cracks on bedrock-floored streams. Gold has a high specific gravity (about 19), so it easily accumulates in placer deposits. Its high density allows prospectors to readily collect placer gold by panning. In addition to its high density, gold has a high melting point (over 1000º C). Gold is also relatively soft - about 2.5 to 3 on the Mohs Hardness Scale. The use of pure gold or high-purity gold in jewelry is not desirable as it easily gets scratched. The addition of other metals to gold to increase the hardness also alters the unique color of gold. Gold jewelry made &amp; sold in America doesn’t have the gorgeous rich color of high-purity gold. The amazing gold mass shown above is from the Little Jonny Mine (also known as the Ibex Mine) at Leadville, Colorado. It weighs 24 ounces and was found in 1892. It's been claimed to be the largest single gold specimen ever collected from the Leadville Mining District. Locality: Little Jonny Mine (a.k.a. Ibex Mine), Breece Hill, Leadville, Colorado, USA
context_page_description: Leadville is the statutory city that is the county seat and only incorporated municipality in Lake County, Colorado, United States. The city population was 2,602 at the 2010 census and an estimated 2,762 in 2018. Leadville is situated at an elevation of 10,152 feet.
  A former silver mining town that lies among the headwaters of the Arkansas River in the heart of the Rocky Mountains, the Leadville Historic District contains many historic structures and sites in its dynamic mining era. In the late 19th century, Leadville was the second most populous city in Colorado, after Denver. Leadville is notable for having many 14,000 foot peaks viewable from town.
context_section_description: As the population boomed, by 1878 Leadville had the reputation as one of the most lawless towns in the West. The first city marshal was run out of town a few days after he was appointed, and his replacement was shot dead within a month by one of his deputies. Fearing the town would be lost to the lawless element, Mayor Horace Tabor sent for Mart Duggan, who was living in Denver, as a replacement. Duggan is little-known today, but was well known at the time as a fearless gunfighter. Using strong-arm and lawless tactics, during his two stints as marshal Duggan brought order to Leadville by 1880 when he stepped down. He was shot and killed in 1888 by an unknown assailant, most likely an enemy he had made when he was a Leadville marshal. Historian Robert Dearment writes, "Mart Duggan was a quick-shooting, hard-drinking, brawling tough Irish man, but he was exactly the kind of man a tough, hard-drinking, quick-shooting camp like Leadville needed in its earliest days. His name is all but forgotten today, but the name 'Matt Dillon' is recognized around the world. Such are the vagaries of life."
  Alice Ivers, better known as Poker Alice, was a card player and dealer of the Old West who learned her trade in Leadville. Born in Devonshire, her family moved to America when she was a small girl. They first settled in Virginia, where she attended an elite girls' boarding school. When she was a teenager, her family moved to Leadville when the silver boom drew hundreds of new residents to the area. At the age of twenty she married a mining engineer who, like many of the men at that time, frequented the numerous gambling halls in Leadville. Alice went along, at first just observing, but eventually she began to sit in on the games as well. After a few years of marriage her husband was killed in a mining accident and she turned to cards to support herself. Alice was attractive, dressed in the latest fashions, and was in great demand as a dealer. Eventually Alice left Leadville to travel the gambling circuit, as was common of the male gamblers of that time. She continued to dress in the latest fashions but took to smoking cigars. Well known throughout the West, gambling halls welcomed her because she was good for business. In her later years, Alice claimed to have won more than $250,000 at the gaming tables and never once cheated.
  Texas Jack Omohundro, Confederate scout, cowboy and stage actor with "Buffalo Bill" Cody's travelling revue, died of pneumonia a month before his 34th birthday in summer 1880 in Leadville where he was living on a small estate with his wife, ballerina Giuseppina Morlacchi.
  Around 1883, shortly after the gun fight at the O.K. Corral, Doc Holliday moved to Leadville where he dealt faro. On August 19, 1884, he shot ex-Leadville policeman Billy Allen, who had threatened him for failing to pay a $5 debt. Despite overwhelming evidence implicating him, a jury found Holliday not guilty of the shooting or attempted murder.
  Gunfighter and professional gambler Luke Short also spent time in Leadville.
  Margaret "Molly" Brown, who became known as "The Unsinkable Molly Brown", moved to Leadville when she was 18. In 1886 she married a mining engineer who was twelve years older, James J. Brown. The Brown family acquired great wealth in 1893 when Brown was instrumental in the discovery of a substantial gold ore seam at the Little Jonny Mine.
  The mine was owned by his employers, the Ibex Mining Company. Margaret Brown became famous because of her survival of the 1912 sinking of the RMS Titanic, after exhorting the crew of Lifeboat No. 6 to return to look for survivors. A 1960 Broadway musical based on her life was produced, along with a 1964 film adaptation of the musical, both titled The Unsinkable Molly Brown. Her home in Denver has been preserved as the Molly Brown House Museum.
  Meyer Guggenheim of the Guggenheim family started out in Leadville in mining and smelting. The family went on to possess one of the largest fortunes in the world. Family members have become known for their philanthropy in diverse areas such as modern art an
caption: Gold (Little Jonny Mine - Leadville, Colorado)
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